*{
    box-sizing: border-box;
}

input{
    margin-bottom: 10px;
    width: 200px;
    height: 30px;
    border-radius: 5px;
    border: none;
    background-color: rgba(239, 233, 238, 0.7);
}
input:hover{
    background-color: rgba(184, 179, 183, 0.7);
}
input:focus{
    outline: none;  /* 去除默认的外部轮廓 */
}
label{
    color: rgba(27, 17, 17, 0.9);
    font-size: 18px;
}
.zt{
    margin-left: 40%;
    margin-top: 17%;
}
.h2{
    margin-top: 10%;
    font-size: 25px;
    color: rgba(27, 17, 17, 0.9);
    margin-bottom: 45px;
    margin-left: 10%;
}
button{
    margin-left: 15%;
    margin-top: 15px;
    width:100px;
    height: 40px;
    font-size: 18px;
    border: none;
    border-radius: 5px;
}
button:hover{
    background-color: rgba(158, 154, 158, 0.7);
    border: none;
}
